Accused Boston Bomber's Lawyers Cite Influence of Domineering Brother

Court Filing Indicates Defense Focus in the Potential Death-Row Case

BOSTON—Lawyers for accused Boston Marathon bomber Dzhokhar Tsarnaev indicated in court filings Friday their defense in the potential death-row case will rest in part on the idea that he was controlled by his domineering older brother.

"Dzhokhar experienced his older brother as an all-powerful force who could not be ignored or disobeyed," the federal court filing said.